/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.libudf.it.string;

import org.apache.iotdb.it.env.ConfigFactory;
import org.apache.iotdb.it.env.EnvFactory;
import org.apache.iotdb.it.framework.IoTDBTestRunner;
import org.apache.iotdb.itbase.category.LocalStandaloneIT;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import static org.junit.Assert.fail;

@RunWith(IoTDBTestRunner.class)
@Category({LocalStandaloneIT.class})
public class StringIT {

    @BeforeClass
    public static void setUp() throws Exception {
        ConfigFactory.getConfig()
                .setUdfCollectorMemoryBudgetInMB(5)
                .setUdfTransformerMemoryBudgetInMB(5)
                .setUdfReaderMemoryBudgetInMB(5);
        EnvFactory.getEnv().initBeforeClass();
        createTimeSeries();
        generateData();
        registerUDF();
    }

    private static void createTimeSeries() {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            statement.addBatch("create database root.vehicle");
            statement.addBatch(
                    "create timeseries root.vehicle.d1.s1 with "
                            + "datatype=text, "
                            + "encoding=plain, "
                            + "compression=uncompressed");
            statement.addBatch(
                    "create timeseries root.vehicle.d2.s1 with "
                            + "datatype=text, "
                            + "encoding=plain, "
                            + "compression=uncompressed");
            statement.executeBatch();
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }

    private static void generateData() {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d1(timestamp,s1) values(%d,%s)",
                            100, "\"[192.168.0.1] [SUCCESS]\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d1(timestamp,s1) values(%d,%s)",
                            200, "\"[192.168.0.24] [SUCCESS]\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d1(timestamp,s1) values(%d,%s)",
                            300, "\"[192.168.0.2] [FAIL]\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d1(timestamp,s1) values(%d,%s)",
                            400, "\"[192.168.0.5] [SUCCESS]\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d1(timestamp,s1) values(%d,%s)",
                            500, "\"[192.168.0.124] [SUCCESS]\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d2(timestamp,s1) values(%d,%s)", 100, "\"A,B,A+,B-\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d2(timestamp,s1) values(%d,%s)", 200, "\"A,A+,A,B+\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d2(timestamp,s1) values(%d,%s)", 300, "\"B+,B,B\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d2(timestamp,s1) values(%d,%s)", 400, "\"A+,A,A+,A\""));
            statement.addBatch(
                    String.format(
                            "insert into root.vehicle.d2(timestamp,s1) values(%d,%s)", 500, "\"A,B-,B,B\""));
            statement.executeBatch();
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }

    private static void registerUDF() {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            statement.execute(
                    "create function regexmatch as 'org.apache.iotdb.library.string.UDTFRegexMatch'");
            statement.execute(
                    "create function regexreplace as 'org.apache.iotdb.library.string.UDTFRegexReplace'");
            statement.execute(
                    "create function regexsplit as 'org.apache.iotdb.library.string.UDTFRegexSplit'");
            statement.execute(
                    "create function strreplace as 'org.apache.iotdb.library.string.UDTFStrReplace'");
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }

    @AfterClass
    public static void tearDown() throws Exception {
        EnvFactory.getEnv().cleanAfterClass();
    }

    @Test
    public void testRegexMatch1() {
        String sqlStr =
                "select regexmatch(d1.s1,\"regex\"=\"\\d+\\.\\d+\\.\\d+\\.\\d+\", \"group\"=\"0\") from root.vehicle";
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            ResultSet resultSet = statement.executeQuery(sqlStr);
            resultSet.next();
            String result1 = resultSet.getString(2);
            resultSet.next();
            String result2 = resultSet.getString(2);
            resultSet.next();
            String result3 = resultSet.getString(2);
            resultSet.next();
            String result4 = resultSet.getString(2);
            resultSet.next();
            String result5 = resultSet.getString(2);
            Assert.assertEquals("192.168.0.1", result1);
            Assert.assertEquals("192.168.0.24", result2);
            Assert.assertEquals("192.168.0.2", result3);
            Assert.assertEquals("192.168.0.5", result4);
            Assert.assertEquals("192.168.0.124", result5);
            Assert.assertFalse(resultSet.next());
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }

    @Test
    public void testRegexReplace1() {
        String sqlStr =
                "select regexreplace(d1.s1,\"regex\"=\"192\\.168\\.0\\.(\\d+)\", \"replace\"=\"cluster-$1\") from root.vehicle";
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            ResultSet resultSet = statement.executeQuery(sqlStr);
            resultSet.next();
            String result1 = resultSet.getString(2);
            resultSet.next();
            String result2 = resultSet.getString(2);
            resultSet.next();
            String result3 = resultSet.getString(2);
            resultSet.next();
            String result4 = resultSet.getString(2);
            resultSet.next();
            String result5 = resultSet.getString(2);
            Assert.assertEquals("[cluster-1] [SUCCESS]", result1);
            Assert.assertEquals("[cluster-24] [SUCCESS]", result2);
            Assert.assertEquals("[cluster-2] [FAIL]", result3);
            Assert.assertEquals("[cluster-5] [SUCCESS]", result4);
            Assert.assertEquals("[cluster-124] [SUCCESS]", result5);
            Assert.assertFalse(resultSet.next());
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }

    @Test
    public void testRegexSplit1() {
        String sqlStr = "select regexsplit(d2.s1, \"regex\"=\",\", \"index\"=\"-1\") from root.vehicle";
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            ResultSet resultSet = statement.executeQuery(sqlStr);
            resultSet.next();
            int result1 = resultSet.getInt(2);
            resultSet.next();
            int result2 = resultSet.getInt(2);
            resultSet.next();
            int result3 = resultSet.getInt(2);
            resultSet.next();
            int result4 = resultSet.getInt(2);
            resultSet.next();
            int result5 = resultSet.getInt(2);
            Assert.assertEquals(4, result1);
            Assert.assertEquals(4, result2);
            Assert.assertEquals(3, result3);
            Assert.assertEquals(4, result4);
            Assert.assertEquals(4, result5);
            Assert.assertFalse(resultSet.next());
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }

    @Test
    public void testStrReplace1() {
        String sqlStr =
                "select strreplace(d2.s1,\"target\"=\",\", \"replace\"=\"/\", \"limit\"=\"2\") from root.vehicle";
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {
            ResultSet resultSet = statement.executeQuery(sqlStr);
            resultSet.next();
            String result1 = resultSet.getString(2);
            resultSet.next();
            String result2 = resultSet.getString(2);
            resultSet.next();
            String result3 = resultSet.getString(2);
            resultSet.next();
            String result4 = resultSet.getString(2);
            resultSet.next();
            String result5 = resultSet.getString(2);
            Assert.assertEquals("A/B/A+,B-", result1);
            Assert.assertEquals("A/A+/A,B+", result2);
            Assert.assertEquals("B+/B/B", result3);
            Assert.assertEquals("A+/A/A+,A", result4);
            Assert.assertEquals("A/B-/B,B", result5);
            Assert.assertFalse(resultSet.next());
        } catch (SQLException throwable) {
            fail(throwable.getMessage());
        }
    }
}
